US2011053945A1PendingUtilityA1
Salts of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihy-dro-5h-pyrrolo[3,4-b]pyrazine
Est. expiryDec 19, 2027(~1.4 yrs left)· nominal 20-yr term from priority
A61P 25/22A61P 25/20C07D 487/04
50
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Claims
Abstract
Novel mesylate, (R)-mandelate, succinate, citrate, fumarate, D-malate, D-tartrate, sulfate and L-tartrate salts of (6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine) are provided.
Claims
exact text as granted — not AI-modified1 . A salt of zopiclone chosen from a mesylate, (R)-mandelate, succinate, citrate, fumarate, D-malate, D-tartrate, sulfate and L-tartrate salt.
2 . A salt of eszopiclone chosen from a mesylate, (R)-mandelate, succinate, citrate, fumarate, D-malate, D-tartrate, sulfate and L-tartrate salt.
3 . A salt according to claim 1 of formula
4 . A salt according to claim 2 of formula
5 . A salt according to claim 1 of formula
6 . A salt according to claim 2 of formula
7 . A salt according to claim 1 of formula
8 . A salt according to claim 2 of formula
9 . A salt according to claim 1 of formula
10 . A salt according to claim 2 of formula
11 . A salt according to claim 1 of formula
12 . A salt according to claim 2 of formula
13 . A salt according to claim 1 of formula
14 . A salt according to claim 2 of formula
15 . A salt according to claim 1 of formula
16 . A salt according to claim 2 of formula
17 . A salt according to claim 1 of formula
18 . A salt according to claim 2 of formula
19 . A salt according to claim 1 of formula
20 . A salt according to claim 2 of formula
21 . A pharmaceutical dosage form comprising the salt of claim 1 and a pharmaceutically acceptable carrier.
22 . A composition formed by reacting racemic or enantioenriched 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine and an acid chosen from methanesulfonic acid, (R)-mandelic acid, succinic acid, citric acid, fumaric acid, D-malic acid, D-tartartic acid, L-tartaric acid and sulfuric acid.
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